For one day, I would trade with some kind of three-star Michelin chef somewhere in the world. Only for a day, though, because I don't want to live in that kind of stressful environment.
And then on the flip side, I would love to trade places with somebody who owns a very private, cool mountainside cabin somewhere in Alaska. That would be awesome—with a river that you can fish in—just to kind of know what it's like to live on the really simple end of things.